Review code changes, open coding issues, publish release notes. Every one is ready to run, and you can adjust it in plain language.
Send client software release notes from approved briefs.
Your stakeholders get release notes in your team's format, and the release owner gets a copy of the sent note.
Email release contacts about completed client software changes.
Your release contacts get a short note with links to completed issues, while you get a copy and any gaps that need attention.